docs: def command_name(app_name, command, help_text):
      """
      Return a snippet of help text for this command.
      """
      command = clr.stringc(command, "cyan")
      help = clr.stringc("--help", "green")
  
      return "{0} {1} {2}\n{3}\n\n".format(app_name, command,
                                           help, help_text)